Company profile · Builders
Killearn Developments Ltd
Killearn Developments Ltd is a 6-year-old private limited company registered in Ayr, company number SC644657, one of 39 building contractors in Ayr. Its next accounts are due at Companies House on 30 April 2027, and its first CT600 is due at HMRC on 31 March 2027.
Key dates
Worked out from the year end and filing history on the Companies House register.
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Financial snapshot, 2025
From the balance sheet at 31 March 2025, as filed at Companies House. Negative net assets mean the company owed more than it owned at that date.
Killearn Developments Ltd over the years
From each year's balance sheet filed at Companies House. Small companies do not have to publish turnover or profit, so these are balance sheet figures.
- Net assets up £148K (+51.4%) on the year before, to -£140K.
- Net assets rose in 1 of 4 year-on-year comparisons on record.
- Current assets of £344K against £484K owed within a year: 0.7 times cover.
- 3 employees on average during the year.
- Balance sheets on record for 5 years, 2021 to 2025.
Net assets by year
| Year end | Net assets | Cash | Current assets | Owed within a year | Employees |
|---|---|---|---|---|---|
| 31 Mar 2025 | -£140K | £311K | £344K | £484K | 3 |
| 31 Mar 2024 | -£288K | £292K | £1.6M | £1.9M | 3 |
| 31 Mar 2023 | -£244K | £5,607 | £4.8M | £5M | 3 |
| 31 Mar 2022 | -£65K | £43K | £2.4M | £2.5M | 3 |
| 31 Mar 2021 | -£15K | £186K | £1.1M | £1.1M | 3 |
Where Killearn Developments Ltd is registered
The registered office is in Ayr (KA7), in the South Ayrshire local authority area, Scotland. Show KA7 2AY on a map.
Other trade companies in KA7
- J McEwan & Son Electrical LtdElectricians
- Net Zero Insulation Scot LtdInstallers
- GG Solutions (Scotland) LtdScaffolders
- DD Walsh & Son LtdBuilders
- DM Rodger & Sons LtdProperty developers
- David Thornton Heating Installation Services LtdPlumbers and heating engineers
- RDS Plumbing Heating and Bathrooms LtdBuilders
- Duncan’S Details LtdCleaning companies
Also registered at this address
3 other companies use the same registered office as Killearn Developments Ltd.
- Dawn Eco-Build LimitedProperty developers
- Dawn Urban Regeneration LimitedProperty developers
- Northinvest Heathfield LimitedProperty developers
What happens if Killearn Developments Ltd files late
Companies House charges an automatic penalty the day after the deadline, and it rises the longer the accounts are late. These are the dates for this company's accounts due on 30 April 2027.
| Companies House | Accounts delivered | Penalty |
|---|---|---|
| Up to 1 month late | 1 May 2027 to 31 May 2027 | £150 |
| 1 to 3 months late | 1 Jun 2027 to 31 Jul 2027 | £375 |
| 3 to 6 months late | 1 Aug 2027 to 31 Oct 2027 | £750 |
| More than 6 months late | From 1 Nov 2027 | £1,500 |
Penalties double if the accounts were also late the year before.
| HMRC (CT600) | From | Penalty |
|---|---|---|
| 1 day late | 1 Aug 2027 | £200 |
| 3 months late | 31 Oct 2027 | another £200 |
| 6 months late | 31 Jan 2028 | HMRC estimates the tax and adds 10% of the unpaid tax |
| 12 months late | 31 Jul 2028 | another 10% of any unpaid tax |
For returns filed on or after 1 April 2026. Late three times in a row and the £200 penalties become £1,000 each.
Company details
As held on the Companies House register.
- Company number
- SC644657
- Status
- Active
- Company type
- Private limited company
- Incorporated
- 16 October 2019 (6 years ago)
- Registered office
- 22 Miller Road, Ayr, KA7 2AY
- Nature of business
- Construction of domestic buildings (SIC 41202)
- Year end
- 31 July (accounting reference date)
- Accounts type
- Total exemption (full)
- Last accounts made up to
- 31 March 2025
- Last confirmation statement
- 15 October 2025
- Charges (mortgages)
- 0 outstanding of 2 registered
Filing notes for building contractors
Building companies often run the Construction Industry Scheme as a contractor, a subcontractor or both. CIS deductions suffered during the year are set against the PAYE bill, and any unrecovered balance at the year end matters when the accounts are drawn up.
Similar companies in Ayr
Other active building contractors registered in Ayr.
- Kwik-Tech Scaffolding Ltd2026
- McGuire Construction (Ayr) Ltd2024
- MCM FM Ltd2021
- Nova Homes (Scotland) Limited2023
- PDW Property Solutions Ltd2020
- RDS Plumbing Heating and Bathrooms Ltd2026
- Reilly Roofing & Builders Ltd2022
- RGW Plumbing & Building Solutions Limited2021
All building contractors in Ayr · All trades in Ayr · Builders across the UK
Frequently asked questions
When are Killearn Developments Ltd's accounts due?
Killearn Developments Ltd's next accounts are due at Companies House by 30 April 2027 (in 200 days), covering the period to 31 July 2026.
When is Killearn Developments Ltd's CT600 due?
The first accounts cover more than 12 months, so there are two Company Tax Returns: one for the 12 months to 31 March 2026, due by 31 March 2027, and one for the period to 31 July 2026, due by 31 July 2027. Corporation tax is payable 9 months and 1 day after the end of each.
Is Killearn Developments Ltd still trading?
Killearn Developments Ltd is listed as active on the Companies House register as of 1 Oct 2026. Active means it has not been dissolved or entered insolvency; it does not show whether it is currently taking on work.
What does Killearn Developments Ltd do?
Killearn Developments Ltd is registered under Construction of domestic buildings (SIC 41202).
How old is Killearn Developments Ltd?
Killearn Developments Ltd was incorporated on 16 October 2019, 6 years ago.
What is the penalty if Killearn Developments Ltd files its accounts late?
Companies House charges £150 if the accounts are up to 1 month late, £375 up to 3 months, £750 up to 6 months and £1,500 after that, doubled if the previous year's accounts were also late. HMRC charges £200 for a CT600 filed a day late and another £200 at 3 months.
Official records
View Killearn Developments Ltd on Companies House for filed documents, officers and the full history.
Based on the Companies House register (snapshot 1 Oct 2026). Deadlines are worked out from the register and assume a standard accounting period; a change of year end or a short period moves them. This page is general information, not tax or accountancy advice.